Here is an (in progress) article I am working on that might help you: https://harishnarayanan.org/writing/artistic-style-transfer/
Repository of explanatory notebooks: https://github.com/hnarayanan/artistic-style-transfer
Repository of explanatory notebooks: https://github.com/hnarayanan/artistic-style-transfer
Edit: most comprehensive, best illustration, so far I have seen on this topic.
This specific blog post made me realize how great some of the pictures look after the edits on colors.